@article{journal,
author = {Herrando, S. and Weiserbs, A. and Quesada, J. and Ferrer, X. and Paquet, J.-Y.},
title = {Development of  urban bird indicators using data from monitoring schemes in two large European cities},
year = {2012},
volume = {35.1},
pages = {141--150},
journal = {Animal Biodiversity and Conservation},
keywords = {Indicador urbano, Biodiversidad, Monitoreo de aves, Selecci{\'o}n de especies, Barcelona, Bruselas}
}